Helen purchased 3 copies of a book online at a 20% discount. She also paid $10 for shipping that was not discounted. How much wa s the original price of one copy of the book if her total ended up being $40?
1 answer:
Answer:
The original price of the book was $12.50
Step-by-step explanation:
3x - 0.2(3x) + 10 = 40
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2.00 grams
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2.00 grams
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Answer:
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Step-by-step explanation:
